Release v0.26.0

[shellrow]

What changed

• Preserve unknown Ethernet payloads and improve low-level frame parsing behavior
• Add diagnosable and strict parsing paths for IPv4, IPv6, TCP, UDP, and frames
• Harden DNS name parsing
• Validate socket configs earlier
• Restore socket blocking mode reliably
• Improve interface refresh ergonomics and address iterators
• Add packet parsing benchmarks and fuzz targets
• Fix zero IPv4 total length handling
• Update Windows datalink capture behavior